Journal of the Architectural Institute of Korea Structure & Construction (대한건축학회논문집:구조계)

Architectural Institute of Korea (대한건축학회)
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Mechanical and Durability Characteristics of Latex-Modified Concrete Using Ultra Rapid Hardening Cement

초속경 시멘트를 이용한 라텍스 개질 콘크리트의 역학성능과 내구성능

  • Received : 2019.01.07
  • Accepted : 2019.05.14
  • Published : 2019.05.30
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Abstract

The purpose of this study was to investigate the mechanical and durability characteristics of latex-modified concrete using ultra rapid hardening cement : four types of mechanical tests including compressive strength, modulus of elasticity, flexural strength and bond strength were performed; and seven types of durability tests including resistance of concrete to chloride ion penetration, freeze-thaw resistance, scaling resistance, coefficient of thermal expansion, cracking tendency, abrasion resistance and drying shrinkage were performed. Required material performance of each test was determined in accordance with the Korea specification for repair of concrete and pavement repairing materials. The test results satisfied the required material performances, and presented a good mechanical and durability characteristics. In particularly, the materials showed early development of compressive strength, flexural strength and bond strength at 3 and 4 hours after curing. SEM photos were also taken to investigate the micro structures of the materials after chloride ion penetration test.

Keywords

Acknowledgement

Supported by : (주)한국 리페어 기술, 대로 건설(주)

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